This gme is only availible for classic builders club, turbo builders club and outrageous builders club sorry for those that are not in them. Anyway use the sword provided in the game and battle each other to the death. Some people will be chosen to battle while the others watch them. Don't get sad if your fighting because the only weapon you get is a simple ronin katana. I am going to say there will be seats to watch in the looking part of the stadium. If your not picked to fight then reset yourself.

this is a cool hangout place

save your treehouse from getting damaged

smash the wall with a rocket launcher you need to be carfull that you don't end up killing yourself.